Time-varying stiffness characteristics of roller bearing influenced by thermal behavior due to surface frictions and different lubricant oil temperatures

被引：33

作者：

Hao, Xu ^{[1
,2
]}

Zhai, Jingyu ^{[1
,2
]}

Liang, Junshuai ^{[1
,2
]}

Chen, Yitong ^{[1
]}

Han, Qingkai ^{[1
,2
]}

机构：

[1] Dalian Univ Technol, Sch Mech Engn, Dalian 116024, Peoples R China

[2] Collaborat Innovat Ctr Major Machine Mfg Liaoning, Dalian 116024, Peoples R China

来源：

TRIBOLOGY INTERNATIONAL | 2020年 / 144卷

基金：

国家重点研发计划;

关键词：

Cylindrical roller bearing; Time-varying stiffness; Frictional heat generation; Lubricant oil temperature; DYNAMIC-MODEL; BALL; SYSTEM; DISPLACEMENT; FORMULATION; STRESS; RINGS; FILM;

D O I：

10.1016/j.triboint.2019.106125

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

In this paper, the time-varying stiffness of the cylindrical roller bearing due to the thermal behavior, i.e. warm-up process and different lubricant oil temperatures are experimentally investigated. Firstly, a special test rig that can measure the bearing stiffness is built. Then, a bearing stiffness identification method is proposed, which can avoid the influence of the clearance and deformation on measurement results. Finally, a series of measurements are carried out at different operational conditions. Results reveal that the bearing stiffness shows strong nonlinearity and time-varying characteristics due to the variation of structure and oil performance. In startup (quasi-isothermal condition) and thermal balance states (combined with the frictional heat generation), the influence of the rotational speed on stiffness is opposite.

引用

页数：12

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